CN111375220B - Gas-liquid separation and recovery device - Google Patents
Gas-liquid separation and recovery device Download PDFInfo
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- CN111375220B CN111375220B CN201811639777.7A CN201811639777A CN111375220B CN 111375220 B CN111375220 B CN 111375220B CN 201811639777 A CN201811639777 A CN 201811639777A CN 111375220 B CN111375220 B CN 111375220B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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Abstract
The invention discloses a gas-liquid separation and recovery device, which comprises: the gas-liquid recovery device comprises an upper pipe box, a shell pass cylinder, a gas-liquid recovery cylinder, an inlet pipe box and a central pipe, wherein the upper pipe box, the shell pass cylinder, the gas-liquid recovery cylinder and the inlet pipe box are sequentially connected; a heat insulation layer is arranged between the gas-liquid recovery cylinder and the inlet pipe box; a plurality of heat exchange tubes are arranged in the shell pass cylinder and are respectively communicated with the upper tube box and the gas-liquid recovery cylinder, and a shell pass inlet and a shell pass outlet are arranged at the lower part of the side wall of the shell pass cylinder. The mixed phase medium is conveyed to the upper pipe box from the inlet pipe box through the central pipe, flows into the heat exchange pipe connected with the upper fixed pipe plate after being redistributed by the upper pipe box, and is heated or cooled by the heating or cooling medium, so that the gas-liquid two-phase balance state is changed at one time, the removing effect is good, and the energy consumption is low. The gas-liquid separation and recovery device completes the production process of a plurality of devices in the traditional production, saves the equipment investment, occupies the area of the field, shortens the process flow and reduces the production investment.
Description
Technical Field
The invention belongs to the field of petrochemical equipment, and particularly relates to a gas-liquid separation and recovery device.
Background
In the petrochemical production, the process of multi-liquid-phase degassing or gas-phase de-weighting concentration needs to be carried out by partially evaporating or condensing a medium and then carrying out gas-liquid separation and recovery, and the process needs various devices to realize the petrochemical production process.
Therefore, there is a need for a gas-liquid separation and recovery apparatus which can perform a partial evaporation or condensation and a gas-liquid separation production process by one apparatus.
Disclosure of Invention
The invention aims to provide a gas-liquid separation and recovery device to realize that one device completes the production process of partial evaporation, condensation and gas-liquid separation.
In order to achieve the above object, the present invention provides a gas-liquid separation and recovery apparatus, comprising:
the device comprises an upper pipe box, a shell pass cylinder, a gas-liquid recovery cylinder and an inlet pipe box which are connected in sequence;
a mixed phase inlet is arranged on the inlet pipe box;
a heat insulation layer is arranged between the gas-liquid recovery cylinder and the inlet pipe box, a gas phase outlet is arranged at the upper part of the side wall of the gas-liquid recovery cylinder, and a liquid phase outlet is arranged at the lower part of the side wall;
a plurality of heat exchange tubes are arranged in the shell pass cylinder, a first fixed tube plate is arranged between the shell pass cylinder and the upper tube box, a second fixed tube plate is arranged between the shell pass cylinder and the gas-liquid recovery cylinder, two ends of each heat exchange tube are respectively fixed to the first fixed tube plate and the second fixed tube plate and are respectively communicated with the upper tube box and the gas-liquid recovery cylinder, and a shell pass inlet and a shell pass outlet are arranged on the side wall of the shell pass cylinder;
the gas-liquid separation and recovery device further comprises a central tube, the central tube penetrates through the first fixed tube plate, the second fixed tube plate and the gas-liquid recovery cylinder body, one end of the central tube is communicated with the upper tube box, and the other end of the central tube is communicated with the inlet tube box.
Preferably, the shell-side tube box further comprises a plurality of baffle plates, and the baffle plates are arranged in the shell-side tube box and are sequentially staggered along the axial direction of the shell-side tube box.
Preferably, the heat insulation layer is arranged on the pipe wall of the central pipe, and the heat insulation layer extends upwards along the axial direction of the central pipe.
Preferably, the liquid seal structure includes outer liquid seal pipe and interior liquid seal pipe, outer liquid seal pipe set up in the periphery of center tube and with form first clearance between the outer wall of center tube, the bottom of outer liquid seal pipe with the upper surface sealing connection of insulating layer, interior liquid seal pipe set up in the center tube interior week and with form the second clearance between the inner wall of center tube, the bottom of interior liquid seal pipe with the upper surface and the lower surface sealing connection of insulating layer, entry pipe case with interior liquid seal pipe intercommunication.
Preferably, a third gap is arranged between the other end of the central pipe and the upper surface of the heat insulation layer, and the first gap, the second gap and the third gap are communicated.
Preferably, the upper end surface of the inner liquid seal pipe is higher than the upper end surface of the outer liquid seal pipe.
Preferably, the heat insulating layer is of a double-layer structure and comprises an upper layer and a lower layer, and a heat insulating cavity is arranged between the upper layer and the lower layer.
Preferably, a gas-phase heat insulation medium is arranged in the heat insulation cavity.
Preferably, the heat insulation device further comprises a U-shaped liquid seal bend, one end of the U-shaped liquid seal bend is communicated with the inlet pipe box, and the other end of the U-shaped liquid seal bend is communicated with the heat insulation cavity.
Preferably, an inclined baffle is arranged at the gas phase outlet, one end of the inclined baffle is fixed above the gas phase outlet, and the other end of the inclined baffle is inclined towards the inside of the gas-liquid recovery cylinder.
The invention has the following beneficial effects:
1. the gas-liquid mixed phase fluid medium is conveyed to the upper pipe box communicated with the central pipe through the central pipe, flows into the plurality of heat exchange pipes after being redistributed by the upper pipe box, is evaporated or condensed in the heat exchange pipes, realizes the cooling and heating effects on the mixed phase through the shell side medium, changes the balance state of the mixed phase, achieves the effects of gas-liquid separation and recovery, and simultaneously realizes the supercooling of condensate. The separated gas phase and liquid phase flow into the gas-liquid recovery cylinder at the bottom from the heat exchange tube, and the separated gas phase and liquid phase are obtained through the gas phase outlet and the liquid phase outlet, so that the gas-liquid two-phase equilibrium state is changed at one time, the gas-liquid separation recovery device has the advantages of good removal effect, low energy consumption, high efficiency and energy saving, the gas-liquid separation recovery device completes the production process of a plurality of devices in the traditional production, the device investment and the occupied area of the field are saved, the process flow is shortened, and the production investment is reduced.
2. The liquid seal structure is arranged on the central tube in the gas-liquid recovery barrel along the tube wall of the central tube, the mixed phase in the central tube is isolated from the separated liquid phase by the liquid seal formed between the outer liquid seal tube and the inner liquid seal tube and the first gap and the second gap formed between the outer wall and the inner wall of the central tube, the third gap communicated with the first gap and the second gap is formed between the central tube and the upper surface of the heat insulation layer, the mixed phase in the central tube is ensured not to be mixed with the gas phase in the gas-liquid recovery barrel, and meanwhile, the heat transfer between the mixed phase in the inlet tube box and the liquid phase of the gas-liquid recovery barrel is blocked by the double-layer structure of the heat insulation layer, so that the separation or recovery effect is realized more efficiently.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings. Wherein like reference numerals generally represent like parts throughout the exemplary embodiments.
Fig. 1 is a schematic view showing a structure of a gas-liquid separation and recovery apparatus according to an embodiment of the present invention.
Description of reference numerals:
1. an upper pipe box; 2. a first fixed tube sheet; 4. a heat exchange pipe; 5. a shell-side cylinder; 6. a baffle plate; 7. a central tube; 8. a shell side inlet; 9. a second fixed tube sheet; 10. a gas-liquid recovery cylinder; 11. a shell-side outlet; 12. an inlet header; 13. a mixed phase inlet; 14. a thermal insulation layer; 15. a gas phase outlet; 16. a liquid phase outlet; 17. an inclined baffle plate; 18. a liquid seal structure; 19. and (4) U-shaped liquid sealing.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The embodiment of the invention provides a gas-liquid separation and recovery device, which comprises an upper pipe box, a shell pass cylinder, a gas-liquid recovery cylinder and an inlet pipe box, which are sequentially connected;
a mixed phase inlet is arranged on the inlet pipe box; a heat insulation layer is arranged between the gas-liquid recovery cylinder and the inlet pipe box, a gas phase outlet is arranged at the upper part of the side wall of the gas-liquid recovery cylinder, and a liquid phase outlet is arranged at the lower part of the side wall; a plurality of heat exchange tubes are arranged in the shell pass cylinder, a first fixed tube plate is arranged between the shell pass cylinder and the upper tube box, a second fixed tube plate is arranged between the shell pass cylinder and the gas-liquid recovery cylinder, two ends of each heat exchange tube are respectively fixed on the first fixed tube plate and the second fixed tube plate and are respectively communicated with the upper tube box and the gas-liquid recovery cylinder, and a shell pass inlet and a shell pass outlet are arranged on the side wall of the shell pass cylinder; the gas-liquid separation recovery device further comprises a central tube, the central tube penetrates through the first fixed tube plate, the second fixed tube plate and the gas-liquid recovery barrel, one end of the central tube is communicated with the upper tube box, and the other end of the central tube is communicated with the inlet tube box.
And the mixed phase medium is conveyed to the upper channel box from the inlet channel box through the central pipe, and flows into the heat exchange pipe connected with the upper fixed pipe plate after being redistributed by the upper channel box, the heating or cooling medium is introduced into the shell side cylinder, and the heat or cooling medium is disturbed outside the heat exchange pipe to heat or cool the mixed phase in the heat exchange pipe.
When the gas phase is subjected to weight removal, the mixed phase is condensed in the heat exchange tube, the gas phase flows along the center of the heat exchange tube, and the condensed liquid phase flows along the tube wall of the heat exchange tube. The refrigerant medium outside the heat exchange tube flows in the opposite direction to the gas phase and the liquid phase inside the heat exchange tube, the liquid phase inside the heat exchange tube flows downwards along the wall, the liquid film of the liquid phase on the tube wall is thin, the heat transfer coefficient is high, and the temperature of the metal wall of the heat exchange tube is gradually reduced in the flowing process of the liquid film, so that the outlet temperature of the liquid phase is greatly reduced.
When the liquid phase is lightness-removed, the mixed phase is evaporated in the heat exchange tube, the liquid phase flows along the wall surface falling film, and the light component is evaporated and removed on the liquid film. The material is evaporated on the thin liquid film, so that the heat exchange strength and the lightness removing effect are greatly improved.
Finally, the gas phase and the liquid phase are separated in the gas-liquid recovery cylinder at the bottom, so that the purpose of gas-liquid separation or recovery is achieved.
The device is suitable, for example, for the following production processes: 1. in an ethylene plant there is a stream of ethylene gas containing ethane which needs to be efficiently removed from the ethylene. 2. In the process of preparing ethylene oxide by oxidizing ethylene, a stream of exhaust gas containing ethylene needs to be recycled. 3. The feed after hydrogenation of the pyrolysis gasoil needs to be freed of small amounts of light components dissolved in the liquid phase. The device is also suitable for other similar production processes, which are not described herein in detail.
Preferably, the gas-liquid separation and recovery device further comprises a plurality of baffle plates, the baffle plates are arranged in the shell pass tube box and are sequentially arranged in a staggered mode along the axial direction of the shell pass tube box, and shell pass media sequentially bypass the baffle plates, so that the heat exchange tube and heating or cooling media realize sufficient heat exchange, and mixed phases in the heat exchange tube are heated or cooled.
Preferably, the gas-liquid separation and recovery device further comprises a liquid seal structure, wherein the liquid seal structure is arranged along the pipe wall of the central pipe and extends upwards from the heat insulation layer along the axial direction of the central pipe.
Specifically, the liquid seal in the gas-liquid recovery cylinder prevents the mixed phase from mixing with the gas phase in the gas-liquid recovery cylinder, and realizes efficient gas-liquid separation or recovery.
Preferably, the liquid seal structure comprises an outer liquid seal part and an inner liquid seal part, and the inner liquid seal part and the outer liquid seal part are communicated at the bottom. The outer liquid seal is arranged between the outer liquid seal pipe and the outer wall of the central pipe, and the bottom of the outer liquid seal pipe is connected with the upper plate of the heat insulation layer in a sealing mode. The inner liquid seal is arranged between the inner liquid seal pipe and the inner wall of the central pipe, the bottom of the inner liquid seal pipe is connected with the upper surface and the lower surface of the heat insulation layer in a sealing mode, and the inlet pipe box is communicated with the inner liquid seal pipe.
Specifically, an outer liquid seal structure and an inner liquid seal structure are arranged on a central tube in the gas-liquid recovery cylinder body along the tube wall of the central tube. At the initial stage of introducing the mixed phase into the inlet channel box, the inner liquid seal and the outer liquid seal have no liquid phase, the gas phase is communicated, a small amount of mixed phase enters the gas-liquid recovery cylinder through the outer liquid seal and the inner liquid seal, heat exchange is generated, the balance state of the mixed phase is changed, so that a small amount of mixed gas and liquid are separated, the separated small amount of liquid phase and the liquid phase overflowing into the outer liquid seal and the inner liquid seal by the gas-liquid recovery cylinder are gathered in the outer liquid seal and the inner liquid seal, the liquid seal is gradually established in an inner gap and an outer gap, the separation of the mixed phase in the central tube from the separated gas phase and the separated liquid phase is realized, the mixed phase and the separated liquid phase are not mixed and are influenced by the pressure difference between the two sides, and the liquid level of the outer liquid seal is higher than the liquid level of the inner liquid seal.
As the preferred scheme, the liquid seal structure is composed of an outer liquid seal pipe with the diameter slightly larger than that of the central pipe and an inner liquid seal pipe with the diameter slightly smaller than that of the central pipe, the upper end face of the inner liquid seal pipe is higher than that of the outer liquid seal pipe, the length of an inner gas phase space in the inner liquid seal pipe is increased, the gas flow resistance is improved, and the liquid seal surface changes relatively slowly when pressure fluctuates on two sides.
As the preferred scheme, the insulating layer is bilayer structure, including upper strata and lower floor, is equipped with thermal-insulated chamber between upper strata and the lower floor.
Specifically, the double-layer heat-insulating wall structure is composed of two layers of steel plates with a distance of 2-5 mm and a lower U-shaped liquid seal bend. The upper part of the upper steel plate is contacted with the liquid phase of the gas-liquid recovery cylinder; the lower part of the lower steel plate is contacted with the mixed phase.
Preferably, the heat insulation device further comprises a U-shaped liquid seal bend, one end of the U-shaped liquid seal bend is communicated with the inlet pipe box, and the other end of the U-shaped liquid seal bend is communicated with the heat insulation cavity.
Preferably, a gas-phase heat insulation medium is arranged in the heat insulation cavity.
In one example, the vapor phase insulation medium is an unsaturated vapor phase insulation medium.
In one example, when the gas phase is removed heavily, because the temperature of the mixed phase is higher than the temperature of the liquid phase of the gas-liquid recovery cylinder, and the heat transfer performance of the metal partition plate is better, if only one layer of partition plate is used, heat can be transferred into the gas-liquid recovery cylinder from the bottom of the partition plate, and because the liquid phase can be partially evaporated after being heated, a large amount of condensable components can be taken away by the vapor phase, so that the gas-liquid separation effect is greatly weakened, and therefore, the double-layer partition plate with the heat insulation layer is arranged to isolate heat transfer.
During operation, the pressure differential across the double-layer structure of the separator plate may cause the separator plate to break. Therefore, the U-shaped liquid seal bend arranged on the isolation plate at the lower layer can balance the pressure difference between the two sides of the two isolation plates.
In one example, in the initial stage of operation, a small amount of mixed phase in the inlet pipe box enters the heat insulation cavity from the U-shaped liquid seal bend, heat is transferred into the gas-liquid recovery cylinder from the upper layer separation plate of the heat insulation layer, the mixed phase in the heat insulation cavity is condensed and separated into gas phase and liquid phase, the gas phase serves as gas phase heat insulation medium in the heat insulation layer, the liquid phase flows into the U-shaped bend, the liquid seal is established in the U-shaped bend, and mixed phase gas in the inlet pipe box is prevented from continuously entering the heat insulation layer. The heat transfer resistance of the gas-phase heat insulation medium in the heat insulation layer is large, so that a large temperature difference is maintained between the mixed phase in the inlet box body and the liquid phase at the bottom of the gas-liquid recovery cylinder, and the partial pressure of condensable components in the gas phase is low due to the large supercooling degree of the liquid phase at the bottom of the gas-liquid recovery cylinder, so that the high-efficiency separation and recovery of the liquid phase and the gas phase are realized.
When the liquid phase is lightened, the liquid temperature in the gas-liquid separation cylinder is higher, and partial liquid in the heat insulation layer is vaporized to form a gas phase space which is used as a gas phase heat insulation medium and also hinders the heat transfer between the upper layer and the lower layer of the heat insulation layer.
Therefore, the pressure on two sides of the two steel plates is balanced and the heat transfer between materials on two sides of the heat insulation layer is blocked through the double-layer heat insulation layer structure with the U-shaped bend.
Preferably, the gas phase outlet is provided with an inclined baffle, one end of the inclined baffle is fixed above the gas phase outlet, and the other end of the inclined baffle inclines towards the inside of the gas-liquid recovery cylinder.
Specifically, after the mixed phase is separated into a liquid phase and a gas phase which flow into the gas-liquid recovery cylinder, the gas phase flows out through the gas phase outlet, the upper part of the gas phase outlet is provided with an inclined baffle plate to prevent the liquid phase from being entrained, one part of the liquid phase is retained in the gas-liquid recovery cylinder, and the other part of the liquid phase is discharged and recovered through the liquid phase outlet.
Examples
Fig. 1 is a schematic view showing a structure of a gas-liquid separation and recovery apparatus according to an embodiment of the present invention.
As shown in fig. 1, an embodiment provides a gas-liquid separation and recovery apparatus, including:
the device comprises an upper tube box 1, a shell pass cylinder 5, a gas-liquid recovery cylinder 10 and an inlet tube box 12 which are connected in sequence;
a mixed phase inlet 13 is arranged on the inlet pipe box 12;
a heat insulation layer 14 is arranged between the gas-liquid recovery cylinder 10 and the inlet pipe box 12, the heat insulation layer 14 is of a double-layer structure and comprises an upper layer and a lower layer, a heat insulation cavity is arranged between the upper layer and the lower layer, unsaturated gas-phase heat insulation media are arranged in the heat insulation cavity, a gas-phase outlet 15 is arranged at the upper part of the side wall of the gas-liquid recovery cylinder 10, a liquid-phase outlet 16 is arranged at the lower part of the side wall, an inclined baffle 17 is arranged at the gas-phase outlet 15, one end of the inclined baffle 17 is fixed above the gas-phase outlet 15, and the other end of the inclined baffle 17 inclines towards the inside of the gas-liquid recovery cylinder 10;
a plurality of heat exchange tubes 4 are arranged in the shell-side barrel 5, a first fixed tube plate 2 is arranged between the shell-side barrel 5 and the upper tube box 1, a second fixed tube plate 9 is arranged between the shell-side barrel 5 and the gas-liquid recovery barrel 10, two ends of each heat exchange tube 4 are respectively fixed on the first fixed tube plate 2 and the second fixed tube plate 9 and are respectively communicated with the upper tube box 1 and the gas-liquid recovery barrel 10, a shell-side inlet 8 is arranged at the lower part of the side wall of the shell-side barrel 5, and a shell-side outlet 11 is arranged at the upper part of the side wall;
the gas-liquid separation and recovery device further comprises a central tube 7, the central tube 7 penetrates through the first fixed tube plate 2, the second fixed tube plate 9 and the gas-liquid recovery cylinder 10, one end of the central tube 7 is communicated with the upper tube box 1, and the other end of the central tube is communicated with the inlet tube box 12. The shell pass tube box is characterized by further comprising a plurality of baffle plates 6, wherein the baffle plates 6 are arranged in the shell pass tube box 5 and are sequentially arranged in a staggered mode along the axial direction of the shell pass tube box 5.
The gas-liquid separation and recovery device further comprises a liquid seal structure 18, wherein the liquid seal structure 18 is arranged along the pipe wall of the central pipe 7 and extends upwards from the heat insulation layer 14 along the axial direction of the central pipe 7. The liquid seal structure 18 comprises an outer liquid seal pipe and an inner liquid seal pipe, the outer liquid seal pipe is arranged on the periphery of the central pipe 7 and forms a first gap with the outer wall of the central pipe 7, the bottom of the outer liquid seal pipe is connected with the upper surface of the heat insulation layer 19 in a sealing mode, the inner liquid seal pipe is arranged on the inner periphery of the central pipe 7 and forms a second gap with the inner wall of the central pipe 7, the bottom of the inner liquid seal pipe is connected with the upper surface and the lower surface of the heat insulation layer 19 in a sealing mode, and the inlet pipe box 12 is communicated with the inner liquid seal pipe. A third gap is arranged between the other end of the central tube 7 and the upper surface of the heat insulation layer 19, the first gap, the second gap and the third gap are communicated, and the upper end surface of the inner liquid seal tube is higher than the upper end surface of the outer liquid seal tube.
The gas-liquid separation and recovery device further comprises a U-shaped liquid seal 19, one end of the U-shaped liquid seal 19 is communicated with the inlet pipe box 12, and the other end of the U-shaped liquid seal is communicated with the heat insulation cavity.
The gas-liquid separation and recovery device comprises the following steps:
as shown by the solid arrows in fig. 1, the mixed-phase fluid enters from the mixed-phase inlet 13 of the inlet header 12, is conveyed to the upper header 1 through the central tube 7, and flows into the heat exchange tubes 4 connected with the first fixed tube plate 2 after being redistributed in the upper header 1;
the pressure and the temperature of a heating or cooling medium are controlled to be close to a critical point, the heating or cooling medium enters a shell-side cylinder 5 through a shell-side inlet 8 and sequentially bypasses all spoilers along a path shown by a hollow arrow, turbulence is carried out outside the heat exchange tube 4, a mixed phase in the heat exchange tube 4 is heated or cooled, the mixed phase is subjected to phase change under the heating or cooling effect, the separation of a gas phase and a liquid phase is realized, and the mixed phase flows downwards into a gas-liquid recovery cylinder 10 through the heat exchange tube 4.
The liquid seal structure 18 and the heat insulation layer 14 form a liquid seal in the gas-liquid recovery cylinder 10, and obstruct the leakage flow and heat transfer of fluid in the central tube, thereby realizing efficient gas-liquid separation and recovery, and gas phase and liquid phase respectively flow out from a gas phase outlet and a liquid phase outlet of the gas-liquid recovery cylinder.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (6)
1. A gas-liquid separation recovery device is characterized by comprising an upper pipe box, a shell pass cylinder, a gas-liquid recovery cylinder and an inlet pipe box which are sequentially connected;
a mixed phase inlet is arranged on the inlet pipe box;
a heat insulation layer is arranged between the gas-liquid recovery cylinder and the inlet pipe box, a gas phase outlet is arranged at the upper part of the side wall of the gas-liquid recovery cylinder, and a liquid phase outlet is arranged at the lower part of the side wall;
a plurality of heat exchange tubes are arranged in the shell pass cylinder, a first fixed tube plate is arranged between the shell pass cylinder and the upper tube box, a second fixed tube plate is arranged between the shell pass cylinder and the gas-liquid recovery cylinder, two ends of each heat exchange tube are respectively fixed to the first fixed tube plate and the second fixed tube plate and are respectively communicated with the upper tube box and the gas-liquid recovery cylinder, and a shell pass inlet and a shell pass outlet are arranged on the side wall of the shell pass cylinder;
the gas-liquid separation and recovery device further comprises a central tube, the central tube penetrates through the first fixed tube plate, the second fixed tube plate and the gas-liquid recovery cylinder body, one end of the central tube is communicated with the upper tube box, and the other end of the central tube is communicated with the inlet tube box;
the heat insulation layer is arranged on the pipe wall of the central pipe, and the heat insulation layer extends upwards along the axial direction of the central pipe;
the liquid seal structure includes outer liquid seal pipe and interior liquid seal pipe, outer liquid seal pipe set up in the periphery of center tube and with form first clearance between the outer wall of center tube, the bottom of outer liquid seal pipe with the upper surface sealing connection of insulating layer, interior liquid seal pipe set up in the inner periphery of center tube and with form the second clearance between the inner wall of center tube, the bottom of interior liquid seal pipe with the upper surface and the lower surface sealing connection of insulating layer, entry pipe case with interior liquid seal pipe intercommunication, the other end of center tube with be equipped with the third clearance between the upper surface of insulating layer, first clearance the second clearance third clearance is linked together, the up end of interior liquid seal pipe is higher than the up end of outer liquid seal pipe.
2. The gas-liquid separation recovery device according to claim 1, further comprising a plurality of baffles, wherein the baffles are arranged in the shell-side cylinder body and are sequentially staggered in the axial direction of the shell-side cylinder body.
3. The gas-liquid separation recovery device according to claim 1, wherein the heat insulating layer has a double-layer structure including an upper layer and a lower layer, and a heat insulating chamber is provided between the upper layer and the lower layer.
4. The gas-liquid separation recovery device according to claim 3, wherein a gas-phase heat insulating medium is provided in the heat insulating chamber.
5. The gas-liquid separation and recovery device according to claim 3, further comprising a U-shaped liquid seal bend, one end of the U-shaped liquid seal bend being communicated with the inlet header, and the other end of the U-shaped liquid seal bend being communicated with the insulating chamber.
6. The gas-liquid separation recovery device according to claim 1, wherein an inclined baffle is provided at the gas phase outlet, one end of the inclined baffle is fixed above the gas phase outlet, and the other end of the inclined baffle is inclined toward the inside of the gas-liquid recovery cylinder.
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| CN201811639777.7A CN111375220B (en) | 2018-12-29 | 2018-12-29 | Gas-liquid separation and recovery device |
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| CN201811639777.7A CN111375220B (en) | 2018-12-29 | 2018-12-29 | Gas-liquid separation and recovery device |
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| CN111375220B true CN111375220B (en) | 2022-04-15 |
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| CN107328090A (en) * | 2017-07-10 | 2017-11-07 | 珠海格力电器股份有限公司 | Burnt gas wall hanging furnace |
| CN208275199U (en) * | 2018-02-11 | 2018-12-25 | 武汉炼化工程设计有限责任公司 | Integrated water-cooled cools down decoking equipment |
| CN208187231U (en) * | 2018-03-14 | 2018-12-04 | 天津朗星流体设备有限公司 | A kind of novel gas heat exchanger condensate liquid reflux splitter |
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